Contents
Contents
1
2
3
4
5
6
General Description .................................................................................................. 1
Features ..................................................................................................................... 1
Pin Assignment ......................................................................................................... 2
Pin Description.......................................................................................................... 3
Block Diagram ........................................................................................................... 5
Function Description ................................................................................................ 6
6.1
Operational Registers......................................................................................... 6
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10
6.1.11
6.1.12
6.1.13
6.1.14
R0 (Indirect Addressing Register) .......................................................................6
R1 (Timer Clock/Counter) ...................................................................................6
R2 (Program Counter) & Stack ...........................................................................6
R3 (Status Register) ............................................................................................9
R4 (RAM Select Register)...................................................................................9
R5 ~ R7 (Port 5 ~ Port 7) ....................................................................................9
R8 ~ R9 ...............................................................................................................9
RA (Wake- up Control Register)........................................................................10
RB (EEPROM Control Register) .......................................................................10
RC (128 Bytes EEPROM Address) ...................................................................11
RD (128 Bytes EEPROM Data) ........................................................................11
RE (LVD Control Register) ................................................................................11
RF (Interrupt Status Register) ...........................................................................12
R10 ~ R3F .........................................................................................................12
A (Accumulator).................................................................................................13
CONT (Control Register)...................................................................................13
IOC5 ~ IOC7 (I/O Port Control Register) ..........................................................14
IOCA (WDT Control Register) ...........................................................................14
IOCB (Pull-down Control Register) ...................................................................15
IOCC (Open-drain Control Register).................................................................15
IOCD (Pull-high Control Register).....................................................................16
IOCF (Interrupt Mask Register).........................................................................16
6.2
Special Function Registers............................................................................... 13
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.3
6.4
6.5
TCC/WDT & Prescaler ..................................................................................... 17
I/O Ports ........................................................................................................... 18
Reset and Wake-up.......................................................................................... 21
6.5.1
6.5.2
Reset .................................................................................................................21
Status of RST, T, and P of the Status Register..................................................27
6.6
6.7
Interrupt ............................................................................................................ 29
LVD (Low Voltage Detector) ............................................................................. 30
Product Specification (V1.1) 10.20.2006
iii
EMC [ ELAN MICROELECTRONICS CORP ]
